Anyone use or is familiar with Zanden room treatment foam?

[caesar]

I heard it once During a Zanden demo.

The guy from Zanden had plastered the whole front wall with this stuff, and it didn’t deaden the room at all. Instead, to my surprise, it made everything better.


Does anyone use this stuff or have any idea what it is?

 

[kach22i]

I found some articles on it.

https://www.soundstageultra.com/ind...-at-1-acoustic-tubes-and-ap-1-acoustic-panels

http://www.theaudiobeat.com/blog/zanden_ap1_at2.htm

 

[Audioking87]

I have the AT2 tube traps. Definitely controls the bass as bass traps normally do but with these I found quite a bit more detail/information in the midrange for monitoring which some other prosumer ones don't really do.

I'm using them behind me with front ported bookshelves.